<template>
  <div class="star" :class="'star-'+size">
    <span class="star-item " :class="starChange" v-for="(starChange,index) in starArr" :key="index"></span>
  </div>
</template>

<script>
  export default {
    props: {
      score: Number,
      size: Number
    },
    computed: {
      starArr() {
        let arr = [];
        const starIng = Math.floor(this.score);
        //向arr中添加N个“on”
        for (let i = 0; i < starIng; i++) {
          arr.push("on");
        }
        //向arr中添加0/1个“half”
        if (this.score * 10 - starIng * 10 >= 5) {
          arr.push("half")
        }
        //向arr中添加N个“off”
        while (arr.length < 5) {
          arr.push("off")
        }
        return arr;
      },


    }
  }
</script>

<style scoped lang="stylus" rel="stylesheet/stylus">
  @import "../../common/stylus/mixins.styl"
  .star //2x图 3x图
    float left
    font-size 0

    .star-item
      display inline-block
      background-repeat no-repeat

    &.star-48
      .star-item
        width 20px
        height 20px
        margin-right 22px
        background-size 20px 20px

        &:last-child
          margin-right: 0

        &.on
          /*bg-image('./images/stars/star48_on')*/
          bg-image('./images/star48_on')

        &.half
          bg-image('./images/star48_half')

        &.off
          bg-image('./images/star48_off')

    &.star-36
      .star-item
        width 15px
        height 15px
        margin-right 6px
        background-size 15px 15px

        &:last-child
          margin-right 0

        &.on
          bg-image('./images/star36_on')

        &.half
          bg-image('./images/star36_half')

        &.off
          bg-image('./images/star36_off')

    &.star-24
      .star-item
        width 10px
        height 10px
        margin-right 3px
        background-size 10px 10px

        &:last-child
          margin-right 0

        &.on
          bg-image('./images/star24_on')

        &.half
          bg-image('./images/star24_half')

        &.off
          bg-image('./images/star24_off')

</style>
